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Larval Geoduck (Panopea generosa) Proteomic Response to Ciliates
Emma Timmins-Schiffman1, José M Guzmán2, Rhonda Elliott Thompson3,4
1University of Washington, Department of Genome Sciences, 3720 15th Ave NE, Seattle, WA, 98195, United States.
Scientific Reports
|April 10, 2020
Summary
Larval geoduck clams mount an innate immune response to ciliate pathogens, characterized by increased protein synthesis and stress-related proteins. This study reveals key molecular mechanisms underlying bivalve larval defense against disease.
Area of Science:
- Marine biology
- Immunology
- Proteomics
Background:
- Invertebrate larvae possess innate immunity from early development.
- Immune pathways can be upregulated by pathogens or natural development.
- Protozoan ciliate infestations pose a threat to larval bivalve aquaculture.
Purpose of the Study:
- Investigate the molecular basis of innate immunity in geoduck clam larvae against ciliate pathogens.
- Characterize the proteomic changes during larval immune response.
- Understand the ontogenetic development of innate immunity in bivalves.
Main Methods:
- Mass spectrometry-based proteomics to analyze larval proteomes.
- Comparison of proteomes from ciliate-exposed and control larval cultures.
- Analysis of larval development from days 4-10 post-fertilization.
Main Results:
- Identified proteins involved in response to ciliate presence.
- Observed increased abundance of ribosomal and protein translation-associated proteins.
- Detected elevated levels of stress and immune response proteins, including heat shock proteins and reactive oxygen species response proteins.
Conclusions:
- Bivalve larval immune response to ciliates involves significant protein synthesis.
- Stress and immune response pathways are upregulated during ciliate exposure.
- Findings enhance understanding of bivalve innate immunity and larval development.
